Title :
Some important factors in turbulence in flight measurement
Author_Institution :
Inst. for Flight Control & Guidance, Tech. Univ. of Braunschweig, Germany
Abstract :
A systematic analysis of each part of a data acquisition system and of each sensor that is involved in the measurement of air data and inertial data is presented. Because a data consistency check can handle the linear items fairly well, such as bias and scaling factor in the error model, the emphasis is on the time delay effect caused not only by the sensors and the data acquisition system but also by some other special factors. Based on these results a method is developed to correct the measured air data that are the combination of gust and inertial components with the relative time shift between them. The final influence of the time delay on the system identification is demonstrated by flight test data in a research aircraft. Some suggestions are given to improve turbulence measurement in flight
Keywords :
aerospace testing; aircraft instrumentation; atmospheric turbulence; data acquisition; delays; wind; air data; data acquisition; error model; flight measurement; flight test data; inertial components; inertial data; relative time shift; research aircraft; scaling factor; system identification; time delay; turbulence; wind measurement; Aerodynamics; Aerospace control; Aircraft; Data acquisition; Delay effects; Measurement techniques; Sampling methods; Sensor systems; System testing; Time measurement;
Conference_Titel :
Instrumentation in Aerospace Simulation Facilities, 1991. ICIASF '91 Record., International Congress on
Conference_Location :
Rockville, MD
DOI :
10.1109/ICIASF.1991.186241
